According top state police officials the dash cam on state trooper Zachery Mills' car supports his claim that he was not chasing the driver of a 2000 Acura that struck and killed city finance employee Matthew Hersl.

According top state police officials the dash cam on state trooper Zachery Mills' car supports his claim that he was not chasing the driver of a 2000 Acura that struck and killed city finance employee Matthew Hersl.

Police have identified the driver of the 2000 Acura TL as Johnny Johnson, 43, of Baltimore.

Authorities said Johnson was charged with manslaughter by automobile, homicide by motor vehicle while impaired by drugs, driving under the influence of drugs, driving under the influence of a controlled dangerous substance, possession of heroin, possession of cocaine, possession of drug paraphernalia and numerous traffic violations.

The crash happened at 100 North Holliday St. around 2:30 p.m. Wednesday when police said Johnson struck Hersl before flipping his car in front of City Hall. Hersl was taken to Shock Trauma, where he died.

Police said a warrant was served on Johnson Monday by members of the Maryland State Apprehension Team and the Baltimore Warrant Fugitive Task Force. He was arrested around 1 p.m. without incident while he was walking to his home.

Johnson had a bail review Tuesday and is being held on $250,000.

Officials said during the investigation, they gathered evidence which indicated Johnson had drugs in his system at the time of the crash, and he had heroin and cocaine in his car. Johnson has a long criminal history that includes drug, robbery and assault convictions, 11 News has learned.

"We appreciate the Maryland State Police for conducting the investigation that resulted in these serious charges," said Baltimore City State's Attorney Gregg Bernstein. "We now look forward to prosecuting the case in court."

Victim's family devastated; Orioles to honor Hersl

Co-workers said Hersl, 45, who worked for the city's finance department, was walking home after work when he was struck. His family said they're still trying to process their loss.

"We are deeply sorrowed and hurting very badly over this tragedy. We miss him. I can't even express it," said Steve Hersl of his brother. He said he and his family have experienced a wide range of emotions, and Johnson's arrest has brought a little relief. "I think the proper justice will prevail, and I don't wish any good luck, bad luck or anything. I just wouldn't want anyone else to go through the pain that my family is going through. It's been really bad."

Police said they're hoping their case against Johnson will help the family.

"We're going to investigate this case to the fullest to make sure that we present a case to the State's Attorney's Office that will bring closure for the family," said Maryland State Police Sgt. Marc Black Sr.

Hersl's family said they're trying to focus on the beautiful memories they have of a volunteer, a fierce Orioles fan and a man who loved his community.

"He was going to thrift stores and buying a bunch of clothes and buying food and feeding the homeless down toward City Hall," Steve Hersl said. "I think Matt would want to be remembered in that way -- just a loving, giving person. He has truly been an angel."

The Orioles gave Hersl's family 30 tickets to Tuesday's game. The team will honor him with a tribute and a moment of silence before the first pitch.

The investigation remains active. Anyone who may have witnessed the crash is still asked to come forward and call the Maryland State Police at 410-780-2700.

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